feat: update terms and default llm endpoint

packages/extension/docs/description.txt

@@ -22,7 +22,7 @@ Page Agent Ext performs DOM analysis locally in your browser. When you initiate
 - Your API Key — Configure your own LLM API (OpenAI, Anthropic, etc.). Data goes directly to your provider
 - Test API — A free test endpoint is available for evaluation; we recommend your own key for regular use
 
-Privacy policy: https://github.com/alibaba/page-agent/blob/main/packages/extension/PRIVACY.md
+Terms of Use & Privacy: https://github.com/alibaba/page-agent/blob/main/docs/terms-and-privacy.md
 
 🌟 Open Source:
 

packages/extension/docs/description_zh.txt

@@ -22,7 +22,7 @@ Page Agent Ext 在浏览器本地进行 DOM 分析。当你发起任务时，经
 - 你的 API Key — 配置你自己的 LLM API（OpenAI、Anthropic 等），数据直接发送到你的服务商
 - 测试 API — 提供免费测试端点供体验，日常使用建议配置自己的 Key
 
-隐私政策：https://github.com/alibaba/page-agent/blob/main/packages/extension/PRIVACY.md
+使用条款与隐私：https://github.com/alibaba/page-agent/blob/main/docs/terms-and-privacy.md
 
 🌟 开源项目：